Carey, 37, will replace Jackson on Saturday Night Live this weekend after Jackson, 41, fell ill Monday night. “They wanted her for 10 years,” says a rep for Carey. “It’s going to be hot!”

The Grammy-winning songbird will join host Jonah Hill for her first appearance on the show in more than a decade. Carey will perform tracks from her upcoming album E=MC2, which will be released April 15. – Tiffany McGee